Interesting timing on this thread. I had a related conversation with a smart, well-informed non-lethal weapon "expert" only last Sunday. He's of the opinion that there are NO CURRENTLY AVAILABLE "Stun Guns" worth the effort to carry one. I echo the above views to go OC blast, go Taser, or go armed. But don't bet a nickel on ANY Stun Gun. I'd prefer lemon juice in a squirt gun.